From b7fe7626b88a15e9c91e83ab9778db0ca5ebace9 Mon Sep 17 00:00:00 2001
From: HuYingzhuo <hyzboy@gmail.com>
Date: Tue, 16 Apr 2019 14:58:10 +0800
Subject: [PATCH] =?UTF-8?q?RenderSurface::CreateBuffer=E5=A2=9E=E5=8A=A0?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF=E6=A3=80=E6=B5=8B=E5=92=8C=E6=8A=A5=E8=AD=A6?=
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---
 example/Vulkan/RenderSurface.cpp | 11 +++++++++--
 example/Vulkan/VK.h              |  4 ++--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/example/Vulkan/RenderSurface.cpp b/example/Vulkan/RenderSurface.cpp
index 2c0f8298..cc89729c 100644
--- a/example/Vulkan/RenderSurface.cpp
+++ b/example/Vulkan/RenderSurface.cpp
@@ -55,11 +55,18 @@ namespace
 
 VertexBuffer *RenderSurface::CreateBuffer(VkBufferUsageFlags buf_usage,VkFormat format,uint32_t count,VkSharingMode sharing_mode)
 {
-    VulkanBuffer vb;
-
     const uint32_t stride=GetStrideByFormat(format);
+
+    if(stride==0)
+    {
+        std::cerr<<"format["<<format<<"] stride length is 0,please use \"RenderSurface::CreateBuffer(VkBufferUsageFlags,VkDeviceSize,VkSharingMode)\" function.";
+        return(nullptr);
+    }
+
     const VkDeviceSize size=stride*count;
 
+    VulkanBuffer vb;
+
     if(!CreateVulkanBuffer(vb,rsa,buf_usage,size,sharing_mode))
         return(nullptr);
 
diff --git a/example/Vulkan/VK.h b/example/Vulkan/VK.h
index b3ab849b..f19ce1e5 100644
--- a/example/Vulkan/VK.h
+++ b/example/Vulkan/VK.h
@@ -12,10 +12,10 @@ VK_NAMESPACE_BEGIN
 using CharPointerList=hgl::List<const char *>;
 
 #ifdef _DEBUG
-bool CheckStrideBytesByFormat();
+bool CheckStrideBytesByFormat();                ///<检验所有数据类型长度数组是否符合规则
 #endif//_DEBUG
 
-uint32_t GetStrideByFormat(const VkFormat &);
+uint32_t GetStrideByFormat(const VkFormat &);   ///<根据数据类型获取访类型单个数据长度字节数
 
 inline void debug_out(const hgl::List<VkLayerProperties> &layer_properties)
 {